page-gallery {
    img{
        width: 100%;
    }
    .image-container {
        min-height: 200px;
        background-size: cover;
    }
 
    @media (min-width: 0px) {
        .images {
             column-count: 1;
        }
    }
 
    @media (min-width: 420px) {
        .images {
             column-count: 2;
        }
    }
 
    @media (min-width: 720px) {
        .images {
             column-count: 3;
        }
    }
 
    .one-image {
        margin: 2px;
    }
}